Title

Enhanced Formation of Calcia-Gallia Glass by Containerless Processing

Abstract

Glass formation from melts of 44 CaO 56Ga2O3(mol%) was investigated under containerless conditions obtained by acoustically stabilized aerodynamic levitation in combination with laser beam heating. The critical cooling rate for glass formation was Rc<100°C/s, much less than values reported in the literature (Rc=550o±120o C/s and ca 350oC/s) for pendant drops of this composition attached to Pt-Rh thermocouples. High values of Rc in pendant drop experiments were confirmed for the specimens used in this work.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Carbon dioxide lasers; Cooling; Gallium compounds; Heating; Laser applications; Laser beams; Lime; Melting; Structure (composition); Thermal effects; Thermocouples; Acoustically stabilized aerodynamic levitation; Calcia-gallia glass; Containerless glass processing; Laser beam heating; Pendant drops

International Standard Serial Number (ISSN)

27820

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1993 Wiley-Blackwell, All rights reserved.

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